Stapling machine



Jan. 13, 1953 H. w. MARANO STAPLING MACHINE Filed April 27, 1950 3Sheets-Sheet l ff W' mi" /f l/ `A M@ i vI A TTORNE lY' Jan. 13, 1953 H.w. MARANO STAPLING MACHINE Filed April 27 1950 55 Sheets-Sheet 2 WIIIII,fe-Reger h. Mp/wa ATTORNEYS Jan. 13, 1953 H. w. MARANO 2,624,878

STAPLING MACHINE Filed April 27, 1950 3 Sheets-Sheet 3 ATTORNEYSPatented Jan. 13, 1953 STAPLING MACHINE Herbert W. Marano, Brooklyn, N.Y., .assignor to Wilson Jones Company, Chicago, Ill., a corporation -ofMassachusetts Application April 27, 1950, Serial No. .158,462

6 Claims.

The present invention relates to stapler or tacking devices. Inparticular, the present invention relates to a stapler of the hand-griptype, which may be held entirely within one hand for Vactuation, eitherby forcing one component against the other, or by resting one componentthereof on a suitable support and hand-forcing the other componentthereagainst.

The main object of the present invention is the provision of a device ofthe character `described wherein the staple advancing pusher isautomatically locked in retracted position during the staple loadingoperation so as not to interfere with the staple loading, and isautomatically released for advancing pressure against lthe staples lwhenthe loading thereof is completed.

Still another obfect of the Vinvention `is the provision of a device ofthe character described including a staple pusher, which lstaple vpusheris normally slidable lflatly along a suitable support, but, onretraction .to permit staple loading, is rockable from the flat positionand locked out of engagement with the staples.

Another object of the present invention is the provision of a handstapler of the -character described which has substantially increasedstaple -capacity in relation to length.

Other and further objects of the present invention will in part beobvious, 'and in part specifically pointed out in the followingdescription of an illustrative embodiment thereof.

In the drawings annexed hereto and forming .a part hereof,

Figure '1 is a longitudinal vertical section through one form of staplerdevice constructed according to and vembodying the `present invention;

Figure 2 is an enlarged similar .section of the hinged yrear end of thedevice, illustrating the staple ,pusher in retracted and lockedposition;

Figure 3 is an enlarged vsimilar .section of the front end of thestapler cove-r, in staple driving position;

Figure 4 is a section on the line 4--4 rof Figure 1.;

Figure 5 .is .a section .on the line .5--5 .of Figure 1;

Figure 6 is a Ipart plan :and part .horizontal section of the staplehousing, trackway and staple pusher assembly;

vFigure 7 isa section'on the line 'I-l -of Figure 1; and

.Figure 8 is yan exploded perspective v.View of the components '.of astapler constructed according Eto and embodying the :present invention.

, thereof for pivoting, as at 36.

The devi-ce of the present invention, indicated generally by referencenumeral I0, comprises a base plate I2,.a cover 3D including a coverguide 50, and a staple magazine assembly, all of which elements arepivotally pinned together at one end thereof.

Base plate I2 comprises an elongated member having an anvil I4 securedto its forward end as by rivets I6., I6.. Anvil I4 may be fixed to baseI2 as shown, but within the present invention may ybe shiftablelengthwise of base I2 and may have more than one set of staple guidegrooves, as I 8, I8, to bend the staple legs inwardly or outwardly asdesired, this being conventional in the art. The sides of base I2 arebent upwardly progressively from the front end 20 thereof towards therear 22, to form -side walls 24, 24 of increasing height, walls .24, 24.being extended rearwardly past end 22 .as at 26, 2-6, the extensionsbeing transversely apertured .as vat .28, 2'8, .for pivoting purposes.

Cover Suis substantially as Vlong as base I2, and is provided with adownwardly depending skirt wall 32, Y32., transversely apertured at therear 34 A drive member 38 of ,flat spring steel is provided and secured`to the underside of cover 30 as by rivets-4G, 40, member .3,8 having anintegral downwardly projecting staple driver component 4,2 at theforward end thereof `and an .integral rearwardly and downwardly angledspring arm 44 .at the rear thereof.

Afcover guide 50 is provided, comprising a pair of spaced side bars .52,52 connected by a narrow integralcrossstrip 54 near the front, and anintegral .cross platform .5.5 at the middle. Bars 52, 52 .arespacedapart as to .t inside cover Sil, and they are transversely apertured -atthe rear ends, as at 58, 58 to pivot with cover .30, apertures 58, 58lining up with apertures 35, -36 in cover 3.0. Staple `driver 42 isnotched along its upper sides, as Aat lil), .60, to a depth suicient toreceive fingers 62, S2 projecting forwardly thereof from the top of sidevbars 52, 52. Thus, when cover 30 and cover guide 50 :are pivoted abouta common center, and :lingers .62, 62 fitted ,into notches 60, 60 `(seeFigures r1 and 4.)., the pressure of spring arm 44' against platform -56locks guide 50 within head 3.0, since the ,projections 62, 62 extendwell past staple driver 42 and are trapped within the notches 60,60..

The staple magazine assembly includes housing 64, staple supporttrackway 66, .staple pusher 168 and a staple feed yspring 1l), thelatter `being mounted .about fa locating 4and guide rod 12 trappedWithin strackway I66, lengthwise thereof.

Housing 64 comprises a floor portion 14 and upstanding side walls 19, 16and an upstanding front wall 16. Sides 16, 16 are extended rearwardly ofoor 14, as at 80, the extension being horizontally apei'tured as at 82,82 for pivoting purposes. Wall 18 is notched, adjacent the top thereof,as at 19, to limit downward movement of cover guide 50 during a staplingoperation. Staple driver blade 42, locked to cover guide 50, as guide 60pivots into housing 64, slides against the inner aspect of housing wall18, and is guided thereby in its straight line downward movement.

As seen in Figure '7, base I2, housing 64, cover guide 50 and cover 30are pivotally connected at their rear ends, as by a rivet 84 passingthrough registering apertures 28, 82, 58 and 36, the respective elementsbeing nested as shown. A base spring leaf 86 is secured to the uppersurface of base I2 by rivets 88, 88, the free end 90 thereof angledrearwardly and upwardly bears against the underside of housing floor 14to resist, to some degree, movement of housing 64 towards base I2.Within housing 64 is disposed the staple support trackway 66, includingpusher 68 of the present invention.

Trackway 66 comprises a floor 92 and upstanding side walls 94, 94, theupper edges 96, 96 of which are flanged outwardly flatly and at rightangles to walls 94, 94, as at 96` 96, flanges 96. 96

being so spaced apart as to permit conventionally7 sized staples to restllatly thereontop, with the staple legs extended downwardly. As seen inFigures 4, and 6. the overall height of walls 94, 94 and flanges 96, 96is such as to equal the length of conventional staple legs, as 98, thebase |00 of the staples resting flatly atop flanges 96, 96. Floor 14 iscut away behind front wall 18, as at |02, to permit passages of staplestherethrough under the influence of staple driver 42. Floor 92 is bentup adjacent the front end thereof as at 04, and the rear end thereof isbent up as at |05, the bendings defining parallel lugs at opposite endsof the trackways and having aligned transverse apertures |08, ||0therethrough respectively. Trackway 66 is disposed within housing 64,atop floor 14, positioned so that the front end of the flanged portionis spaced one staples thickness from the inner aspect of housing wall18, as indicated at |I2; the spacing at ||2 being in vertical alignmentwith opening |02 in the floor of housing 64.

Staple pusher 68 comprises a flat body portion II 4 with depending sideWalls ||6, II6. A wing ||8 is struck out from body II4 and bentdownwardly at right angles thereto. A second wing is struck out frombody I 4 and bent upwardly therefrom at right angles thereto. Dependingwing IIB is apertured, as at |22 to permit the passage of rod 12therethrough, opening I 22 being larger than the diameter of rod 12. Theforward ends of sides I6, I|6 are provided with integral inwardlydirect-ed and extended spring lingers |24, |24, and the rear ends ofsides I I6, ||6 are provided with integral, inwardly and rearwardlydirected spring lingers |26, |26. These two pairs of inturned lingersserve to retain pusher 68 slidably and flatly atop trackway 66, whilepermitting a rockingor tilting action thereof at one portion of thetrackway. It is to be noted that while the rear lingers |26, |26 aresubstantially the full height of sides IIS, II6, the front fingers |24,|24 are formed some little distance below body II4 thereby providing aspace. as |28 between body ||4 and lingers |24, |24 (see Figure 2). Therear ends of flanges 96, 96 are bent downwardly, as at 91, 91, thebending limiting rearward movement of pusher 68.

Referring to Figure 8, it will be seen that flanges 96, 96 are notchedas at |30, |30, near the rear end thereof. In assembling trackway 66,pusher 68 is slid over flanges or rails 96, 96 from the front thereof.The spring 10 is then threaded on rod 12, and the leading end of the rodpassed through wing aperture |22 of pusher 68. The leading end of rod 12is then passed through aperture |06 in lug |04, and the rear end of rod12 p assed through aperture |I0 in lug |06. The projecting ends of rod12 are then upsetras at |32, |32 to lock the parts together, and. theassembly is then secured, as by spot welding at |34 (see Figure 5)within housing 64 as above detailed.

Cover 30 and cover guide 50 are assembled, and fitted within the rearwalls of housing 64, and thence between extensions 26, 26, and the partspinned together for pivotal movement by rivet 64. As will be obvious,cover 39 and cover guide 50 will pivot substantially as one, whilerelatively swingable through the degree of arc permitted by fingers 62,62, along notches 60, 60 in ram 42. Housing 64 is swingable with respectboth to base I2 and the cover and guide assembly, but I provide means toreleasably lock housing 64 to the cover and guide. These means compriseupwardly extended wings |36, |36 (Figures 5 and 8) formed atop sidewalls 64, 64, wings |36, |36 being transversely apertured as at |38,|38, these apertures lining up with outwardly bumped projections |40,|40 on the sides of bars 52, 52 of guide 50, the interit of the bumpingsin apertures |38 spring holding the parts together against disengagement(except for permitting the insertion of staples into the magazine)during ordinary use of the device. located, there is suilicient spacebetween the underside of guide bars and the top of flanges 96, 96 topermit sliding movement of pusher 68 under the inuence of spring 10. Therelative pivoting movement of guide 50 towards housing 64 is limited byfingers 62, 62 resting atop notches 19, 19 in housing wall 18 (Figure4).

To load a supply of staples onto trackway 66, within housing 64, thecover and guide assembly 60 is released from the engagement of lugs |40,I 40 in apertures 38, |38 (Figure 5) and swung away from housing 64,into the position of Figure 2, thereby exposing the interior of housing64 and tr-ackway 66 therewithin. Pusher 68 is then slid rearwardly ontrackway 66 by manual pressure against upstanding wing |20, until thepusher passes notches |30, |30, this rearward movement being limited bydownturned flange portions 91, 91.y As fingers |24, |24 pass notches|30, |30, a tilting movement is developed on pusher 68 by compression cfspring 10, due to the location of the points of action, and the frontend of the pusher tilts upwardly and ngers |24, |24 raised above thelevel of notches |30,

|30. Thus, on release of the moving force', fin# gers |24, |24 will bespring pressed against the forward edgesof notches |30, I 30, to holdthe pusher 68 temporarily in that position and out of the way while astrip of staples is laid into housing 64 with the staple bodies |00, |09lying flatly atop flanges 96, 96 and the staple legs 98, 98 projectingdownwardly into the space between housing walls 16, 16 and flanges 96,96. When the staple supply strip is thus positioned,

cover 30 and guide 50 are swung, as a unit, over As so' against andvonto housing 64. Pusher 68 is locked,

at the rear ofthe device, nearer the pivot point, and as it is contactedby the lower edges of guide side bars 52, 52, bearing against the top ofpusher body II 4, it will be retiltedv to force fingers |24, I24 downbelow flanges 96, 96, and out of engagement therewith, whereupon thenormal expansile biasing of spring 'Ill will shift the pusher againstthe rear staple in the supply strip, forcing the 'staple strip forwardlyuntil the first staple in the strip is urged against the inner aspect ofhousing wall 18, over opening |02, and in line with staple driver 42, asin Figures l and 4. Lug IM serves as a stop to engage wing I I8 on theunderside of pusher 68, limiting the forward movement thereof.

'Io operate the device to drive `a staple, cover 38 is forced downwardlytowards v .and against base I2, against the normal biasing of springleaf 90, pressing against the underside of housing 74. As spring 90 isovercome and flattened, cover 36, guide E) and housing 'i4 approach baseI 2, at which time staple driver 42 moves downjward behind wall 'I8 andthrough the channel opening II2, separating the leading staple from thestrip and driving samel against anvil I4.

The cover 30, guide 50, housing 54, trackway 56 and base 24 are allformed, as by stamping or otherwise of fiat sheet steel. The parts areheat treated at locations where wear occurs, and the device, as a whole,may be brightly plated or otherwise treated to enhance its appearance.

With my trackway and pusher arrangement, it will be seen that the stapleholding capacity of my device is substantially that of the length of thetrackway, less the length of the pusher. The particular coil springshown, which has a plurality of coils of different diameters, whileoperating quite well with my device, is not essential thereto, samebeing the subject of a copending patent application Serial No. 83,750,led March 16, 1949, which matured into Patent No. 2,528,444 on October31, 1950, and which was reissued under No. Re. 23,349, dated March 27,1951. As will be readily appreciated from the foregoing, my device mayalso be used to drive staples without deforming the legs thereof, as thecover 3U, guide 50, and housing assembly I4 may be swung away from andused independently of base I2. In view of the relatively small size itis possible to achieve with a stapler of the present invention, a chainC may, if desired, be linked to the end thereof, as in Figure 1, so thatit can be hung on a suitable support.

Having now described my invention, what I claim and desire to secure byLetters Patent is: Y

l. In a stapling machine including a base, an upper member of invertedchannel shape, and a staple driver blade projecting downwardly therefromat the front end thereof, with the rear end of the upper member beingpivotally supported on the base; the improvements comprising a lowermember of channel shape open at the top and forming a magazine forstaples, the rear end of the lower member being pivotally supported atthe rear end of the upper member; a means at the front end of the lowermember for retaining the staples; a staple supporting trackway disposedwithin the lower member and spaced from the sides thereof and from thestaple retaining means; a pusher movably supported on the trackway forengaging the staples; yieldable means in the magazine to urge the pusherforward for moving the staples towards the retaining means; inwardlydirected fingers on the opposite sides of the pusher'extending towardseach other, the

trackway at the rear thereof having detentsifor the fingers, means fortilting the pusher with its front end upwards of the trackway uponmanual retraction thereof for engaging the detents by the ngers therebypreventing the pusher from being moved by the urging means; a driverguide' between the cover and the upper member and interengaged with thecover to pivot therewith,"

the driver guide for yieldably depressing the raised front portion ofthe pusher when the `upper member and guide are moved downwardlytherebyv releasing the pusher for forward movement under action oftheurging means.

2. A stapling'machine as in claim 1, whereinf the pusher comprises abase portion disposed atop the trackway and is provided with wallsdepending from the sides of the base, `and the fingers extend inwardlybelow the trackway during movement of the pusher under the influence ofthe slide urging means.

3. In a stapling machinev including a base, an upper member of invertedchannel shape, and a staple driver blade projecting downwardly therefromat the front end thereof, with the rear end of the upper member beingpivotally supported on the base; the improvements comprising a lowermember of channel shape open at the top and forming a magazine forstaples, the rear end of the lower member being pivotally supported atthe rear end of the upper member; a means at the front end of the lowermember for retaining the staples; a staple supporting trackway disposedwithin the lower member and spaced upwardly of the bottom of the lowermember and from the sides thereof and from the staple retaining means inthe front thereof; a pusher movably supported on the trackway forengaging the staples; yieldable means in the magazine to urge the pusherforward for moving the staples towards the retaining means; fingers onthe opposite sides of the pusher bent inwardly towards each other, thetrackway at the rear thereof having detents for the fingers, means fortilting the pusher with its front end upwards of the trackway uponmanual retraction thereof for engaging the detents by the ngers therebypreventing the pusher from being moved by the urging means, a driverguide between the cover and the upper member and interengaged with thecover to pivot therewith, means to limit movement of the cover and guidetowards and away from each other, the cover and the guide being manuallyseparable from the lower member substantially simultaneously to exposethe interior of said lower member and the pusher therewithin; and meansforming part of the driver guide for yieldably depressing the raisedfront portion of the pusher when the upper member and guide are moveddownwardly thereby releasing the pusher for forward movement underaction of the urging means.

4. A stapling machine as in claim 3, wherein the driver blade hasnotched sides up from the bottom thereof, and the driver guide hasforwardly extending spaced apart fingers at the front thereof passingthrough the notches in the blade for interengagement therewith.

5. A stapling machine as in claim 3, wherein yieldable means areprovided between the cover acs-raarsv and the guide to urge themapart-saidv meansv comprising aleaf spring. 1' t 6. In a staplingmachine including a base, an upper member the rear end of which ispivotally supported on the rear of the base, and a staple magazinebetween the base and upper member, the rear end of which magazine ispivotally supported on the rear of the base, the free ends of said base,magazine and upper member being separable at the unconnected ends;wherein the magazine is of channel shape open at the top with means atthe front end thereof for retaining the staples; wherein a U- shapedmember is secured within the magazine with the upper ends of the arms ofthe U-member bent over and outwardly to form a staple supportingtrackway, the edges of which platform are spaced from the sides of themagazine and the front of which trackway is spaced from the stapleretaining means at the front of the lmagazine whereby staplesfcan movewithin the magazine along the trackway and towards the retaining means;wherein a staple pusher is disposed atop the trackway, the pushercomprising a body portion resting atop the trackway, walls dependingfrom the sides of the trackway and fingers on said walls at the frontthereof bent inwardly under the trackway; wherein yieldable means areprovided in the magazine between the arms of the U-member to urge the-REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATNTS Number Name Date 2,073,819 Vogel Mar. 16, 19372,279,584 Vogel Apr. 14, 1942 2,309,779 Maynard Feb. 2, 1943 2,311,412Pankonin Feb. 16, 1943 2,354,760 Lindstrom Aug. 1, 1944 2,427,156Percoco Sept. 9, 1947 2,489,050 Ruskins Nov. 22, 1949

